Brick-mold sander



(No Model.) 3 Sheets-Sheet 1.

C. A. ADAMS. BRICK M-OLD SANDER.

No. 470,963. Patented Mar. 15, 1892.

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3 Sheets-Sheet 3.

(No Model.)

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BRICK MOLD SANDER. I No. 470,963. Patented Mar. 15, 1892.

CHARLES A. ADAMS, OF CANTON, MARYLAND.

BRICK-MOLD SANDER.

SPECIFICATION forming part of Letters Patent No. 470,963, dated March15, 1892.

Application filed May 4, 1891.

To all whom it may concern:-

Be it known that I, CHARLES A. ADAMS, of Canton, Baltimore county, andState of Maryland, have invented certain Improvements in Machines forSanding Brick-Molds, of which the following is a specification.

In the description of the said invention which follows reference is madeto the accompanying drawings, forming a part hereof,

and in which- Figures 1 and 2 are views of the machine as seen fromopposite sides, and Fig. 3 a plan of the invention.

Referring to the drawings, A is the frame of the machine, and B B arehorizontallyplaced timbers elevated some considerable distance from theground and secured to the frame A.

C O are track-rails fastened to the upper surfaces of the timbers B.

D is a carriage having truck-wheels a,which rest on the track-rails O,and is adapted to be moved longitudinally of the said rails by means ofdevices hereinafter described.

E E are supporting-timbers for the brickmolds, which are denoted by F,and they are situated slightly above the carriage and spread laterally,so as to be exteriorly of it when seen from the top, as in Fig. 3.

The molds to be sanded are placed one above another, with the lowest oneresting on the supporting-timbers E, as shown in Figs. 1 and 2. v

The devices for moving the carriage and with it the lowest mold which iswithdrawn from under the others consists as follows:

G is a driving-shaft, the outer end of which is supported by anindependent part of the frame H. (Shown only in Fig. 2.) The inner endof the shaft G rests in a box (not shown) attached to a part of theframe proper, and to it is keyed a pinion I. This pinion, which is shownin Fig. 2, is in engagement with a gear-wheel J on one end of a shaft b,which extends entirely across the machine and is supported inbearing-boxes c on the frame A. (See particularly Fig. 3.) On the otherend of this shaft b is a disk d, to which is fastened by means of boltse the slotted arm f, carrying a roller 9 at its longer end. The bolts 6pass through the slot h of the arm Serial No. 391,442. (No model.)

at pleasure.

K is a lever fulcruined at j to a block it, adapted under certaincircumstances, hereinafter described, to slide longitudinally of aslotted guide m, supported by the frameA of the machine. (See Figs. 1and 3.)

The upper end of the lever K, against which the roller g strikes in therevolution of the shaft b and its disk 61 in the direction indicated bythe curved arrow, is shod with iron and thrown back in order to admit ofthe return movement of the said lever, as hereinafter described.

The lower end of the lever K is connected by a link 0 to an arm L on ashaft 'n, which extends entirely across the machine. To this shaft arekeyed two arms M, which are attached to the carriage D by links 13. Thereturn movement of the lever K is effected by means of a chain g, whichconnects the stationary pin 0" of the roller g to an arm N, keyed to theshaft 01..

From the foregoing description it will be seen that the carriageD has areciprocating movement, and, as it is provided with weighted pawls s, ateach forward movement it passes under the stacked molds and the pawlspass behind the lowest one. In the backward movement of the carriage thelower mold is drawn from under the others and carried along the timbersand left to be sanded, as hereinafter described. The said mold isfinally brought to the inner end of the timbers E and thence to a shelf,hereinafter described, and from this position it is elevated so as tooccupy the position shown to the right in Fig. 1 and to the left in Fig.2.

The means for elevating the mold are as follows: Referring to Fig. 2,one of the spokes of the gear J has a pin 25, on which is a roller O. Pis a bar connected by means of a pin it at the lower end to an arm Q onthe shaft R. On this shaft are also two arms S, having their upper endsloosely attached to the lower ends of the rods T, which are bolted tothe uprights 4;. These uprights are connected at the top by means ofashelf w and are adapted to slide in staples U, projecting from theframe A. As the roller 0 descends it strikes the 7. Consequently thedistance of the roller g from the center of the shaft 1) may be alteredI upper end of the bar P, which is shod with a curved plate a. In thisoperation the uprights o, with the shelf w, are forced up.

To avoid injury to the machine in case of any obstruction to theoperation of the uprights 1;, the bar P is provided with a chain b,which passes over the shaft Rand is fitted with a weight a, whichnormally rests on the ground, as shown in Fig. 2. Should the upwardmotion of the uprights o be impeded, the bar P, instead of being forceddown, is pushed outward, and the weight 0 is lift-ed. This allows theroller 0 to pass the plate a without moving the uprights. As soon as theobstruction is removed the parts again assu me their original position.

To prevent the breaking of any attachments of the carriage D in case itbecomes jammed, the block 7t, to which the lever K is pivoted, is fittedwith a rod cl, to one end of which a chain 6 is fastened. This chain iswrapped around a sheave V and carried to the short arm of a weightedlever XV. Should the movement of the carriage be prevented, the block itis forced back, carrying with it the lever K, and the roller 9 passes itwithout eifectingits vibration.

X X are bars leading from a cross-piece f, which is elevated above thecarriage a distance equal to the height of a mold, to the forward partof the frame.

The operation of the machine is as follows: A number of molds are placedone upon another on the timbers E above the carriage D, as shown in thedrawings. When the machine is set in motion, the first operationconsists in moving backward the carriage, which carries with it thelowest one of the tier of molds. This mold is left by the carriage as itreturns for another in the position of the mold marked 1 in Fig. 3. Inthe next operation or movement of the carriage another mold is carriedto the said position and the first mold is by the second one pushed intothe place of the mold marked 2 in Fig. The two molds within the frameare now filled with sand. The next operation of the carriage is to carrya third mold from the bottom of the tier to the position 1, when thefirst mold is pushed under the cross-piece f to the position 3, which ison the shelf 20. The sand which projects above its edge is struck off bythe lower edge of the said cross-piece. During the operations describedthe uprights o, with their shelf 10, have been subjected to a verticalreciprocating motion, but so far an inoperative one in view of therebeing no molds fed to the said shelf; but as the first mold is pushedonto the shelf by the following molds it is lifted to the height shownby the isolated mold, when it is grasped by the attendant and turnedover or inverted on the bars X. In this operation the contained sandfalls to the other molds underneath. Enough sand has adhered to theinner surfaces of the mold to prevent the sticking of the clay, and theprepared mold is transferred to the brick-making machine.

It will be understood that the operation of the machine is a continuousone and that the sand is used over and over until exhausted, when afresh supply is added.

I claim as my invention- In a machine for sanding brick-molds, areciprocating carriage forthe purpose described, a rotary shaft carryingan arm fitted with a roller, a series of vibratory arms connected to thesaid carriage, and a lever actuated from the said rotative roller,fulcrum ed to a yielding block, whereby in case of the said carriagebecoming jammed the said block will be moved and the operation of thesaid lever be completed without any movement of the carriage,substantially as specified.

CHARLES A. ADAMS.

Witnesses:

WM. T. HOWARD, DANL. FISHER.

